Vacuum cleaning device.



M. S. WRIGHT.

VACUUM CLEANING DEVICE. APPLICATION man APR. 16. |912.

1 ,1 84,908. Patented May 30, 1916.

MORRIS S. WRIGHT, 0F WORCESTER, MAS COMPANY, OF WORCES SACHUSETTS,ASSIGNOR TO TER, MASSACHUSETTS'. y

M. s. 'WRIGHT VACUUM CLEANING DEVICE.

Specification of Letters Patent.

Patented May 3o, 1916.

Original application led November 17, 1909, Serial No. 528,618. Dividedand this application led. April I 16, 1912. Serial No. 691,206. Y

To all whom it may concern:

Be it known that I, MoRRis,S.'WR1GHT, a citizen of the United States,residing at orcester, in the county of Worcester and State ofMassachusetts, have invented certain new and useful Improvements inVacuum Cleaning Devices, of which the following is a specification,reference being had therein to the accompanying drawing.

This invention relates to certain improvements in vacuum cleaningdevices, and more particularly to novel and improvedmeans for securingthe dust inlet wall of the device in place and permitting ready removalthereof.

The present application is a division of my application Serial No.528618, led November 17, 1909, entitled pneumatic' cleaning machine,which said application resulted in Patent N o. 1,015,372, dated January23, 1912.

.In devices of the character embraced in the patent referred to, aremovable wall, which constitutes the lust inlet member, is provided forthe vacuum chamber casing, whereby to obtain access to the interior ofthe caslng, for emptying the collected dust, etc., `and the presentinvention has to deal more particularly with novel means of connectionfor said removable dust inlet wall.

One of the objects of overcome the use cih-,Screws and the like engagingthreaded apertures in the removable wall and the wall of the casing,since in such cases, when the threaded apertures become worn, it isimpossible to maintain the closed contact or air-tight connectionbetween the parts, it is necessary to bring into use a screw driver orother operating tool resulting in considerable inconvenience and wasteof time, and the screws are likely to become lost.

In overcoming the above and other defects, the invention herein embracesnovel securing means for the wall, doing away with the necessity ofbringing into use any auxiliary tool, which said means is connected toone or the other of the parts comprising the vacuum chamber casing andremovable wall whereby it is at all times in position for use in theapplication of the removable wall, and when in position will uniformlymaintain the parts in place, and under constant spring pressure.

the invention is ,to-

Other and further improvements will be appreciated from the which fread. in connection ywith drawings forming a part the .accompanyinghereof, and wherein is. disclosedv for-.the

purpose of illustratlon a convenient and satff isfactory embodiment of:the invention.

In the drawlngs, Figure l' 1sA a longitudi- Fig. 2 is affront devicecutaway disclosing theconnecting member 1n locking position. y

description to follow, or a clear understanding .ofthe inside. view ofthe device cut ,away'and disclosing the parts in locking position..Referring now more particularly tothe 'draw1ngs, wherein like referencelnumerals refer to corresponding parts throughout the several views, awind chest or ber is' provided, the vsame being vdesignated as a wholeby the reference character A, and the casing thereforr comprisinglabottom or base part 1, a top parti24 preferably coextensive with thebase part,` '1, sides 33a and back 4. The vaccum chamber is open at itsfront-and is adapted to be closed by a removable front wall 5a. Thiswall preferably also constitutes the Ifront wall of a removablereceptacle'in'the form of a drawer 5, adaptedto be positioned in thevacuum chamberfand has., portions which overlap the Iwall of'thel vacuumchamber surrounding the opening in the vacuum .chamf-V front thereof.The removable wall'f` ,is--

an opening, shown lin the of the invention, said opening .conand ifvdesired, a

may 'be provided fol` the.:

A and is indicated by the numeral 6,;'thel same being adapted to beremovably mounted on the removable wall.,5,, as more' par-l ticularlybrought out in the patent v-referred to.

Suitable means, is provided' for-5 creating vacuum in the chamber 1, thesame'preferably comprising exhausting bellows or pneuin the sides oredges of the removable wall 5*".

- drawn into 43 arespring members secured at one end 43 to the sides ofthe chest, the said spring members being adapted to normally rest in therecesses 41 and connected at their opposite ends to pintles or bolts 44adapted to fit in the recesses 42 of said removable front Wall, thepintles having a flange or head to overlie the wall of the recess 42 andterminating in an operating knob or hand piece 54.

It is noted that when the removable wall has been positioned, thelocking pintles 44 are bodily'and -reely movable whereby to engagewithin the recesses 42 in the removab e wall, the tension of the springbeing to exert inward pressure on the pintles thereby holding theremovable wall snugly and uniformly against a suitable packing46.interposed between said removable wall and the edges of the vacuumchamber casing.

Since the locking bolts are connected to one of the parts comprising thevacuum chamber casing and removable wall, it will be observed that thesame will not be accidentally displaced or lost, in position for use inthe application of the removable wall. In applying the removable wall,after first positioning the same on the wall of the vacuum chamber withthe drawer extension within the chamber, the operator takes hold of thefreely movable bolts and by a swinging movement connects the same withthe removable wall whereby to support the removable wall and because ofthe a'ct that the securing member is lengthwise adjustable, through themedium of the spring, the removable wall air-tight engagement withvacuum chamber casing, andnthe constant ressure will maintain thisengageen in locking position, the securingv means siYV ce it seatswith'nthe coperating recesses of the wall of the vacuum chamber and theremovable dust inlet wall, offers -no obstruction beyond the sides ofthe device. c

,If desired, suitable wear plates 55 may be provided, the same beingsecured as by screwsf' tothe outerjsurface of the remoable wall 5** andhaving slotted ways 57 ment.

' the combination of adapted to register with the recesses in the edgesof said removable wall, so that when the movable pintles or bolts. arein locking position on the removable wall, the wall itself is protected,and wil?. aged in operation of said securing means.

What I claim is:

1. In a device of the character described, the combination of a box-likecasing hav ing top, bottom and side walls, one of said walls beingremovable, and means at opposite edges of said removable wall for uni-`formly maintaining said side wall in tight engagement with the adjacentwalls ci the casing, said lmeans including a spiral spring secured atone end in a recess portion. of an adjacent wall of the casing, a boltsecured to the opposite end of said spring, the removable side wall ofthe casing having edge recesses to receive the bolts, and saidboltshaving a headed end to engage over the front surface of said removablewall and exerting inward pressure thereon.

2. In a. device of the character described, the combination of a boxlike casing having a bodily removable side wall, and means on the casingvadjacent opposite edgeso said removable sidewall for uniformly holdingsaid movable wall in position, including bodily removable spring lheldbolts having an enlarged end portion to directly engage over the frontsurface of said removable wall, said spring being adapted to exertinward pressure on the whereby the engaging portion of the latter willforce the removable wall into tight engagement with adjacent walls ofthe casing.

3. In a device of the character described, the combination'of a box likecasing having an open side, a bodily removable closure Wall for saidvside, said closure wall having in opposite edges recessed portions, andthe adjacent side walls of the casing having alined recessed portions,coil springs one for each of said recesses and to the casing at a pointwithin said recesses of the casing, and bolts carried by opposite endsof said springs adapted to engage within the recesses of vthe removablewall and having headed ends to engage over the outer surface of saidremovable wall.

4. In a device of the character a boX like casing having an open side, abodily removable closure wall for said side, said closure wall having inoppmite edges recessed portions, and the adjacent side walls of thecasing alined rece's having sed portions, coil springs one for each ofsaid recesses and secured at one end to thefcasing at a point withinsaid recesses of the casing, bolts carried by opposite ends of saidsprings adapted to engage within the recesses of the removable wall andhaving headed ends to engage over the outer not become dem boltdescribed,

said means ico surface of said removable wall, and metallic platessecured to the outer surface of the removable wall adjacent saidrecessed portions to be engaged by said headed ends of the bolts.

5. In a device of the character described, a casing having a removablewall with oppositely disposed slots in two sides thereof, spiral springssecured at one end one to each of the side walls of the casing, andheaded bolts secured to the outer end of said springs, the -springsconstituting the only supports for the bolts, whereby the latter areadapted to bodily move in any direction, and said bolts adaptedto engagein the slotted 15 edges of the removable wall with the headed endengaging over the outer surface of said removable wall, whereby tomaintain the latter under spring pressure in contact with the adjacentwalls of the casing.

In testimony whereof I aiix my signature in presence of two witnesses.

MORRIS S. WRIGHT. Witnesses:

HENRY P. MURRAY, HENRY H. WRIGHT.

